GSR Tri-Phase 18-3.5-8 +1MgO+TE

A phased-release organic fertiliser that provides a consistent release of nitrogen and potash over five months.

In stock
As low as £79.20 £66.00

  • Description
  • Specification
  • Usage Guide
  • Q & A (0)


Quick-release nitrogen & slow-release potash

Quick-release N gives way to Methylene Urea, followed by a final release from the high nitrogen organic fertiliser.

Slow-release potash from Kali vinasse helps regulate the water and the intake and movement of nutrients around the plant.

All purpose organic fertiliser

GSR Tri-Phase is essential to reduce plant stress and enhance drought resistance. All purpose organic fertiliser is perfect for sports fields, golf fairways, golf tees and all amenity areas. 

Key features

  • 16-20-week release period
  • Mini-granular for quick dispersal into the soil
  • Phased release uniform feeding
  • Slow-release potash aids plant health and drought resistance

Trust the Amenity experts

Contact our experts today if you want to discuss GSR Tri-Phase fertiliser.



Copy Specification
Analysis 18-3.5-8 +1Mgo +TE
Trace Elements Copper, Zinc, Boron, Manganese and Molybdenum
Granule Size 1.0 - 2.0 mm

Supplier: Germinal Amenity
Tel: 01522 868714
Copy Specification

Usage Guide

Copy Usage Guide
Spreading Rate 25 - 35 g/m²
Period of Usage March - September
Spreading Instructions Carry out two equal spreading at right angles to each other and diagonally to the main axis
Longevity 16 - 20 weeks
Spreader table for Scotts Rotary Spreader: ACCUPRO 2000/SR2000


Bout width 2.5 m

SR 2000

Bout width 3 m

Product 35 g/m2 17.5 g/m2 35 g/m2 17.5 g/m2
GSR Tri-Phase O/P L Q M
The spreader settings are guidelines only. The spreader should be calibrated prior to application to ensure accuracy. The spreader settings are based on a walking speed of 5 km/hour. Walking faster or slower than 5 km/hour will alter the speed width and application rate. Exact rates are dependent upon the spreader itself and the accuracy of the person operating it. 
Click here for safety data sheet

Supplier: Germinal Amenity
Tel: 01522 868714
Copy Usage Guide

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